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Finding the Fourth Proportional to 119,854.89, 165,409.09 and 68,885.39

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Solution

The fourth proportional to 119,854.89, 165,409.09 and 68,885.39 is: 95,067.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,854.89 : 165,409.09 = 68,885.39 : x
  2. Step 2: Convert to fraction form
    119,854.89/165,409.09 = 68,885.39/x
  3. Step 3: Cross multiply
    119,854.89x = 165,409.09 × 68,885.39
  4. Step 4: Simplify right side
    119,854.89x = 11,394,269,915.50
  5. Step 5: Solve for x
    x = 11,394,269,915.50/119,854.89
  6. Step 6: Final answer
    x = 95,067.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.